Global Patent Index - EP 4328213 A3

EP 4328213 A3 20240403 - A HIGH PURITY 2,3,3,3-TETRAFLUOROPROPENE

Title (en)

A HIGH PURITY 2,3,3,3-TETRAFLUOROPROPENE

Title (de)

HOCHREINES 2,3,3,3-TETRAFLUORPROPEN

Title (fr)

2,3,3,3-TÉTRAFLUOROPROPÈNE DE HAUTE PURETÉ

Publication

EP 4328213 A3 20240403 (EN)

Application

EP 23205072 A 20090731

Priority

  • US 8514108 P 20080731
  • US 51074009 A 20090728
  • EP 16180735 A 20090731
  • EP 09166994 A 20090731
  • US 58846406 A 20061027

Abstract (en)

The present invention discloses a manufacturing process to produce high purity 1234yf from 245eb, which includes the removal of impurities present in 245eb raw material, the dehydro fluorination of 245eb, and the removal of impurities present in final crude product. The disclosed manufacturing process allows one to lower the levels of undesired 1225ye and trifluoropropyne in the final 1234yf product below 500, and 50 ppm, respectively.

IPC 8 full level

C07C 17/04 (2006.01); C07C 17/25 (2006.01); C07C 17/383 (2006.01); C07C 17/395 (2006.01); C07C 21/18 (2006.01)

CPC (source: CN EP KR)

C07C 17/04 (2013.01 - EP); C07C 17/23 (2013.01 - KR); C07C 17/25 (2013.01 - CN EP); C07C 17/38 (2013.01 - CN); C07C 17/383 (2013.01 - CN EP KR); C07C 17/395 (2013.01 - EP); C07C 19/08 (2013.01 - KR); C07C 21/18 (2013.01 - EP)

C-Set (source: CN EP)

CN

  1. C07C 17/25 + C07C 21/18
  2. C07C 17/38 + C07C 21/18
  3. C07C 17/383 + C07C 21/18
  4. C07C 17/38 + C07C 19/08
  5. C07C 17/383 + C07C 19/08

EP

  1. C07C 17/04 + C07C 19/10
  2. C07C 17/25 + C07C 21/18
  3. C07C 17/383 + C07C 21/18
  4. C07C 17/383 + C07C 19/08

Citation (search report)

Designated contracting state (EPC)

AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK SM TR

DOCDB simple family (publication)

EP 4328213 A2 20240228; EP 4328213 A3 20240403

DOCDB simple family (application)

EP 23205072 A 20090731